package com.itheima.reggie.controller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.itheima.reggie.entity.Employee;
import com.itheima.reggie.common.R;
import com.itheima.reggie.service.EmployeeService;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.DigestUtils;
import org.springframework.web.bind.annotation.*;

import javax.servlet.http.HttpServletRequest;

/**
 * 员工管理
 */
@Slf4j
@RestController
@RequestMapping("/employee")
public class EmployeeController {

    @Autowired
    private EmployeeService employeeService;

    @GetMapping
    public R<String> test(String param3)
    {
        return R.success("test");
    }

    /**
     * 员工登录
     * @param request
     * @param employee
     * @return
     */
    @PostMapping("/login")
    public R<Employee> login(HttpServletRequest request, @RequestBody Employee employee)
    {
        // 1. 将页面提交的代码password进行md5加密处理
        String password = employee.getPassword();
        password = DigestUtils.md5DigestAsHex(password.getBytes());

        // 2. 根据页面提交的用户名username查询数据库
        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(Employee::getUsername, employee.getUsername()); // 等值查询
        Employee emp = employeeService.getOne(queryWrapper); // username有唯一索引

        // 3. 如果没有查询到则返回登录失败结果
        if(emp == null){
            return R.error("登录失败");
        }

        // 4. 密码比对, 如果不一致则返回登录失败结果
        if(!emp.getPassword().equals(password)){
            return R.error("登录失败");
        }

        // 5. 查看员工状态吗如果为已禁用状态, 则返回员工已禁用结果
        if(emp.getStatus() == 0){
            return R.error("账号已禁用");
        }

        // 6. 登陆成功, 将员工id存入Session并返回登录成功结果
        request.getSession().setAttribute("employee", emp.getId());

        return R.success(emp);
    }

    /**
     * 员工退出
     * @param request
     * @return
     */
    @PostMapping("/logout")
    public R<String> logout(HttpServletRequest request)
    {
        request.getSession().removeAttribute("employee");
        return R.success("退出成功");
    }

    /**
     * 新增员工
     * @param employee
     * @return
     */
    @PostMapping
    public R<String> save(HttpServletRequest request, @RequestBody Employee employee)
    {
        log.info("新增员工, 员工信息: {}", employee.toString());

        // 设置初始密码, 进行md5加密
        employee.setPassword(DigestUtils.md5DigestAsHex("123456".getBytes()));

        // // 设置创建和更新时间
        // employee.setCreateTime(LocalDateTime.now());
        // employee.setUpdateTime(LocalDateTime.now());
        //
        // // 获取当前登录用户的id
        // Long empId = (Long) request.getSession().getAttribute("employee");
        // // 设置创建和更新用户
        // employee.setCreateUser(empId);
        // employee.setUpdateUser(empId);

        employeeService.save(employee);

        return R.success("新增员工成功");
    }

    /**
     * 员工信息分页查询
     * @param page
     * @param pageSize
     * @param name
     * @return
     */
    @GetMapping("/page")
    public R<Page> page(int page, int pageSize, String name)
    {
        log.info("page={}, pageSize={}, name={}", page, pageSize, name);
        // 构造分页构造器
        Page pageInfo = new Page(page, pageSize);

        // 构造条件构造器
        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper();
        // 添加过滤条件
        queryWrapper.like(StringUtils.isNotEmpty(name), Employee::getName, name);
        // 添加排序条件
        queryWrapper.orderByDesc(Employee::getUpdateTime);

        // 执行查询
        employeeService.page(pageInfo, queryWrapper);

        return R.success(pageInfo);
    }

    /**
     * 根据id修改员工信息
     * @param employee
     * @return
     */
    @PutMapping
    public R<String> update(HttpServletRequest request, @RequestBody Employee employee)
    {
        long id = Thread.currentThread().getId();
        log.info("线程id: {}", id);
        log.info("员工信息: {}", employee.toString());
        // Long empId = (Long) request.getSession().getAttribute("employee");
        // employee.setUpdateUser(empId);
        // employee.setUpdateTime(LocalDateTime.now());
        employeeService.updateById(employee);

        return R.success("员工信息修改成功");
    }

    /**
     * 根据id查询员工信息
     * @param id
     * @return
     */
    @GetMapping("/{id}")
    public R<Employee> getById(@PathVariable Long id)
    {
        log.info("根据id查询员工信息...");
        Employee emp = employeeService.getById(id);
        if(emp != null) {
            return R.success(emp);
        }
        return R.error("没有查询到对应员工信息");
    }
}
